| /* |
| * Copyright (c) 2020 Inria |
| * Copyright (c) 2016 Georgia Institute of Technology |
| * Copyright (c) 2008 Princeton University |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer; |
| * redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution; |
| * neither the name of the copyright holders nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| |
| #ifndef __MEM_RUBY_NETWORK_GARNET_0_SWITCHALLOCATOR_HH__ |
| #define __MEM_RUBY_NETWORK_GARNET_0_SWITCHALLOCATOR_HH__ |
| |
| #include <iostream> |
| #include <vector> |
| |
| #include "mem/ruby/common/Consumer.hh" |
| #include "mem/ruby/network/garnet/CommonTypes.hh" |
| |
| namespace gem5 |
| { |
| |
| namespace ruby |
| { |
| |
| namespace garnet |
| { |
| |
| class Router; |
| class InputUnit; |
| class OutputUnit; |
| |
| class SwitchAllocator : public Consumer |
| { |
| public: |
| SwitchAllocator(Router *router); |
| void wakeup(); |
| void init(); |
| void clear_request_vector(); |
| void check_for_wakeup(); |
| int get_vnet (int invc); |
| void print(std::ostream& out) const {}; |
| void arbitrate_inports(); |
| void arbitrate_outports(); |
| bool send_allowed(int inport, int invc, int outport, int outvc); |
| int vc_allocate(int outport, int inport, int invc); |
| |
| inline double |
| get_input_arbiter_activity() |
| { |
| return m_input_arbiter_activity; |
| } |
| inline double |
| get_output_arbiter_activity() |
| { |
| return m_output_arbiter_activity; |
| } |
| |
| void resetStats(); |
| |
| private: |
| int m_num_inports, m_num_outports; |
| int m_num_vcs, m_vc_per_vnet; |
| |
| double m_input_arbiter_activity, m_output_arbiter_activity; |
| |
| Router *m_router; |
| std::vector<int> m_round_robin_invc; |
| std::vector<int> m_round_robin_inport; |
| std::vector<int> m_port_requests; |
| std::vector<int> m_vc_winners; |
| }; |
| |
| } // namespace garnet |
| } // namespace ruby |
| } // namespace gem5 |
| |
| #endif // __MEM_RUBY_NETWORK_GARNET_0_SWITCHALLOCATOR_HH__ |